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1. 发明授权

US5708672A Dual wavelength solid state laser 失效
标题翻译：双波长固态激光器
公开(公告)号：US5708672A
公开(公告)日：1998-01-13
申请号：US593251
申请日：1996-01-29
申请人： Maurice A. Pessot , David E. Hargis
发明人： Maurice A. Pessot , David E. Hargis
IPC分类号： H01S3/06 , H01S3/08 , H01S3/0941 , H01S3/16 , H01S3/10
CPC分类号： H01S3/0627 , H01S3/0604 , H01S3/0809 , H01S3/094053 , H01S3/09415 , H01S3/1611 , H01S3/1673
摘要： A dual wavelength continuous wave (cw) solid state microlaser device that provides simultaneous laser action at a first and a second wavelength. The laser comprises a solid state gain material including a rare earth element having a first gain transition at the first wavelength and a second gain transition at the second wavelength. The gain material defines a block having a first face and a second, opposite face. A first reflective surface that is substantially reflective at both the first and second wavelengths is closely coupled to the first face. An output coupler provides a second reflective surface that is partially reflective at both the first and the second wavelengths, which is oriented with respect to the first reflective face to define an optical cavity through the first and second faces of the solid state gain material. An optical pump source is provided to end pump the solid state gain material with continuous pump radiation at a pump wavelength that is highly absorptive by the gain material. In some embodiments, the first reflective surface may be formed directly on the first face of the solid state gain material, and the second reflective surface may be formed directly on the second face of the solid state gain material. The resultant laser beam comprises two wavelengths each of which is believed to have a single longitudinal mode. In some embodiments the solid state gain material comprises a uniaxial crystal oriented within the optical cavity to provide polarized emissions for the first and second wavelengths.
摘要翻译：双波长连续波（cw）固态微激光器装置，其在第一和第二波长处提供同时激光作用。激光器包括固体增益材料，其包括具有第一波长的第一增益跃迁和第二波长的第二增益跃迁的稀土元素。增益材料限定具有第一面和第二相对面的块。在第一和第二波长处基本反射的第一反射表面紧密耦合到第一面。输出耦合器提供第二反射表面，该第二反射表面在第一和第二波长处是部分反射的，其相对于第一反射面定向，以限定通过固态增益材料的第一和第二面的光学腔。提供光泵浦源，以在泵浦波长处以增益材料高吸收的连续泵浦辐射泵送固态增益材料。在一些实施例中，第一反射表面可直接形成在固态增益材料的第一面上，并且第二反射表面可以直接形成在固态增益材料的第二面上。所得到的激光束包括两个波长，每个波长被认为具有单个纵向模式。在一些实施例中，固态增益材料包括在光腔内定向的单轴晶体，以提供第一和第二波长的极化发射。

2. 发明授权

US5802086A Single cavity solid state laser with intracavity optical frequency mixing 失效
标题翻译：单腔固态激光器具有腔内光频混频
公开(公告)号：US5802086A
公开(公告)日：1998-09-01
申请号：US593094
申请日：1996-01-29
申请人： David E. Hargis , Maurice A. Pessot
发明人： David E. Hargis , Maurice A. Pessot
IPC分类号： H01S3/06 , H01S3/08 , H01S3/108 , H01S3/10
CPC分类号： H01S3/108 , H01S3/0604 , H01S3/0615 , H01S3/0627 , H01S3/08086 , H01S3/0809 , H01S3/094053
摘要： A composite cavity continuous wave (cw) microlaser that lases at two fundamental wavelengths, denoted by .lambda..sub.1 and .lambda..sub.2, which are frequency-mixed in a suitable nonlinear crystal oriented within an optically resonant cavity for phase-matched frequency mixing to generate radiation at a third wavelength. The optically resonant cavity is defined by a first reflective surface and a second reflective surface, both of which are substantially reflective at a first and a second wavelength. A highly absorbing solid-state gain material, preferably Nd:YVO.sub.4, which has a first gain transition at the first wavelength and a second gain transition at the second wavelength different from the first wavelength is disposed within the optically resonant cavity. The highly absorbing solid-state gain material is closely coupled to the first reflective surface to promote single mode operation of both fundamental lasing frequencies. An optical pump source is optically coupled through the first reflective face to end-pump the solid-state gain material with continuous pump radiation at a pump wavelength that is highly absorptive by the gain material. In some embodiments, the solid-state gain material has an input face that includes the first reflective surface and the nonlinear crystal has an output face that includes the second reflective surface.
摘要翻译：复合空腔连续波（cw）微激光器，其在两个基本波长处发射，由λ1和λ2表示，其被频率混合在定向在光学谐振腔内的适当的非线性晶体中，用于相位匹配的频率混合以产生辐射第三波长。光学谐振腔由第一反射表面和第二反射表面限定，两者都在第一和第二波长处基本上是反射的。具有第一波长的第一增益跃迁和不同于第一波长的第二波长的第二增益跃迁的高吸收固态增益材料，优选地，Nd：YVO4设置在光学谐振腔内。高吸收性固体增益材料紧密耦合到第一反射表面以促进两个基本激光频率的单模操作。光泵浦源通过第一反射面光学耦合，以固体增益材料以泵浦波长的连续泵浦辐射来泵浦固体增益材料，泵浦波长由增益材料高度吸收。在一些实施例中，固态增益材料具有包括第一反射表面的输入面，并且非线性晶体具有包括第二反射表面的输出面。

3. 发明授权

US07869133B2 Anamorphic optical system providing a highly polarized laser output 有权
标题翻译：变形光学系统提供高度偏振的激光输出
公开(公告)号：US07869133B2
公开(公告)日：2011-01-11
申请号：US12686178
申请日：2010-01-12
申请人： John O'Shaughnessy , David E. Hargis , Eric B. Takeuchi , Marc L. Shaffer
发明人： John O'Shaughnessy , David E. Hargis , Eric B. Takeuchi , Marc L. Shaffer
IPC分类号： G02B13/08 , G02B27/10
CPC分类号： G02B27/0081 , G02B19/0014 , G02B19/0052 , G02B27/0972 , G02B27/283 , H01S5/005 , H01S5/0092 , H01S5/0683
摘要： Apparatus and methods are disclosed for transforming a laser beam to a polarized shaped beam in, for example, a frequency converted laser system. In one embodiment, an anamorphic optical system includes a first prism and a second prism that can be configured to form a Brewster telescope, the first prism and second prism each having an input surface and an exit surface, and wherein at least one surface of the input or exit surfaces are coated with a polarization selective coating. The optical system can include an adjustment system configured to change the position of one or both of the first prism and the second prism to adjust the transformation of the shape of the laser beam. In some embodiments of the optical system, a configuration of the first prism, the second prism, and the polarization selective coating produce a laser beam having a polarization ratio of about 100:1 or higher.
摘要翻译：公开了用于将激光束变换为例如变频激光系统中的偏振成形光束的装置和方法。在一个实施例中，变形光学系统包括第一棱镜和第二棱镜，其可以被配置成形成布鲁斯特望远镜，第一棱镜和第二棱镜各自具有输入表面和出射表面，并且其中至少一个表面输入或出射表面涂覆有偏振选择性涂层。光学系统可以包括被配置为改变第一棱镜和第二棱镜中的一个或两个的位置以调整激光束的形状的变换的调节系统。在光学系统的一些实施例中，第一棱镜，第二棱镜和偏振选择性涂层的配置产生具有约100:1或更高的偏振比的激光束。

4. 发明授权

US6154259A Multi-beam laser scanning display system with speckle elimination 失效
标题翻译：多光束激光扫描显示系统，消除斑点
公开(公告)号：US6154259A
公开(公告)日：2000-11-28
申请号：US978655
申请日：1997-11-26
申请人： David E. Hargis , Charles G. Fink , Robert A. Bergstedt , Graham W. Flint
发明人： David E. Hargis , Charles G. Fink , Robert A. Bergstedt , Graham W. Flint
IPC分类号： H04N5/74 , H04N9/31
CPC分类号： H04N9/3141 , H04N5/7416 , H04N9/3132
摘要： A display system includes blue, green, and red laser light sources and light shaping devices which receive the laser light from the laser light sources and shapes the light into a number of approximately identical beamlets. The beamlets are modulated individually and the modulated beamlets are combined. The combining results in an output of beamlets, each of which comprises three input beamlets of each of the colors red, green, and blue. The resultant beamlets can then be scanned onto a display screen.
摘要翻译：显示系统包括蓝色，绿色和红色激光光源和光学成形装置，其接收来自激光光源的激光，并将光线形成多个大致相同的子束。子束被单独调制，调制的子束被组合。组合产生子束的输出，每个子束包括红色，绿色和蓝色中的每一种的三个输入子束。然后可以将所得的小束扫描到显示屏上。

5. 发明授权

US5990983A High resolution image projection system and method employing lasers 失效
标题翻译：高分辨率图像投影系统和采用激光的方法
公开(公告)号：US5990983A
公开(公告)日：1999-11-23
申请号：US727618
申请日：1997-06-23
申请人： David E. Hargis , Graham Flint , Shlomo Assa
发明人： David E. Hargis , Graham Flint , Shlomo Assa
IPC分类号： H04N9/31 , H04N5/74
CPC分类号： H04N9/3132
摘要： An image projection system employing microlaser and/or diode laser arrays. Each laser in each array is individually addressable. The system includes three linear laser arrays, one red, one green, and one blue, each individually addressable laser being powered and modulated in accordance with the input image signal. When microlaser arrays, which are energized by laser diode pumps, are used, the laser diode pumps are formed in equivalent arrays. The laser output beams are combined in a dichroic prism and reflected off a rotating multifaceted scanning mirror which effects two dimensional scanning as it rotates. The image beam reflected from the scanner passes through an imaging lens, a speckle eliminator and then onto the projection screen. The invention also includes the method of generating and scanning the image beam, as well as the novel speckle eliminator and the microlaser array configured for optimally close spacing to achieve the desired result. In one embodiment, the laser diode pumps are directly modulated by the video signal, while in another embodiment the microlaser outputs are modulated utilizing a spatial light modulator array.
摘要翻译： PCT No.PCT / US94 / 11181 Sec。 371日期：1997年6月23日 102（e）日期1997年6月23日PCT 1994年9月30日PCT PCT。公开号WO95 / 10159 日期1995年04月13日采用微型激光器和/或二极管激光器阵列的图像投影系统。每个阵列中的每个激光单独可寻址。该系统包括三个线性激光器阵列，一个红色，一个绿色和一个蓝色，每个可单独寻址的激光器根据输入图像信号进行供电和调制。当使用由激光二极管泵激励的微激光器阵列时，激光二极管泵以相同的阵列形成。激光输出光束在二向色棱镜中组合并被旋转的多面扫描反射镜反射，在其旋转时进行二维扫描。从扫描仪反射的图像束通过成像透镜，散斑消除器，然后穿过投影屏幕。本发明还包括产生和扫描图像束的方法，以及新颖的散斑消除器和微型激光器阵列，其被配置为用于最佳间隔以获得期望的结果。在一个实施例中，激光二极管泵由视频信号直接调制，而在另一实施例中，利用空间光调制器阵列来调制微激光输出。

6. 发明授权

US5796766A Optically transparent heat sink for longitudinally cooling an element in a laser 失效
标题翻译：用于纵向冷却激光元件的光学透明散热器
公开(公告)号：US5796766A
公开(公告)日：1998-08-18
申请号：US784051
申请日：1997-01-17
申请人： David E. Hargis , Sven E. Nelte
发明人： David E. Hargis , Sven E. Nelte
IPC分类号： H01S3/04 , H01S3/042 , H01S3/06 , H01S3/081 , H01S3/082 , H01S3/0941 , H01S3/109 , H01S3/16
CPC分类号： H01S3/0627 , H01S3/042 , H01S3/082 , H01S3/109 , G02F2001/3503 , H01S2302/00 , H01S2303/00 , H01S3/025 , H01S3/0401 , H01S3/0405 , H01S3/0602 , H01S3/0604 , H01S3/0612 , H01S3/0815 , H01S3/0816 , H01S3/09415 , H01S3/1611 , H01S3/1671 , H01S3/1673
摘要： A longitudinally-cooled laser element assembly comprises an optically transparent heat sink (OTH) coupled to a laser element and a heat sink. An etalon structure including a first flat surface and a second, substantially parallel flat surface is formed in the laser element and/or the OTH. In some embodiments, a balanced etalon is provided by forming a reflector on the second flat surface of the etalon that has a reflectivity approximately equal to the Fresnel loss at the interface between the OTH and the laser element. In some embodiments the laser element assembly includes a second OTH coupled to the laser element at a second interface, thereby defining a second Fresnel loss. Preferably, the second OTH has an index of refraction substantially equal to the index of refraction of the first OTH, so that said first and second Fresnel losses are approximately equal and a balanced etalon is formed. In some embodiments the laser element comprises a solid-state gain medium. In other embodiments the laser element comprises a nonlinear frequency conversion crystal. An intracavity frequency-converted laser is described in which OTHs are used to cool both the gain medium and the nonlinear material.
摘要翻译：纵向冷却激光元件组件包括耦合到激光元件和散热器的光学透明散热器（OTH）。在激光元件和/或OTH中形成包括第一平坦表面和第二基本上平行的平坦表面的标准具结构。在一些实施例中，通过在标准具的第二平坦表面上形成具有近似等于OTH和激光元件之间的界面处的菲涅耳损耗的反射率的反射器来提供平衡的标准具。在一些实施例中，激光元件组件包括在第二界面处耦合到激光元件的第二OTH，从而限定第二菲涅耳损耗。优选地，第二OTH具有基本上等于第一OTH的折射率的折射率，使得所述第一和第二菲涅尔损耗近似相等，并且形成平衡的标准具。在一些实施例中，激光元件包括固态增益介质。在其他实施例中，激光元件包括非线性频率转换晶体。描述了腔内频率转换激光器，其中使用OTH来冷却增益介质和非线性材料。

7. 发明授权

US5751751A Deep blue microlaser 失效
公开(公告)号：US5751751A
公开(公告)日：1998-05-12
申请号：US731823
申请日：1996-10-21
申请人： David E. Hargis , Sven E. Nelte
发明人： David E. Hargis , Sven E. Nelte
IPC分类号： G02F1/37 , H01S3/04 , H01S3/06 , H01S3/0941 , H01S3/109 , H01S3/16
CPC分类号： H01S3/0627 , H01S3/109 , H01S2302/00 , H01S2303/00 , H01S3/0405 , H01S3/0602 , H01S3/0604 , H01S3/0612 , H01S3/0615 , H01S3/07 , H01S3/0809 , H01S3/09415 , H01S3/1611 , H01S3/1671
摘要： A monolithic diode pumped solid-state laser (11) comprising as the laser host neodymium-doped yttrium orthovanadate (Nd:YVO.sub.4) (12, 52) or neodymium-doped gadolinium orthovanadate (Nd:GdVO.sub.4) (57, 67) operating on the .sup.4 F.sub.3/2 .fwdarw..sup.4 I.sub.9/2 (.about.914 nm or .about.912 nm respectively) transition, to which a suitable nonlinear optic material (16), such as potassium niobate (KNbO.sub.3) or beta barium borate (BBO), is bonded. The nonlinear crystal gives rise to intracavity frequency doubling to .about.457 or .about.456 nm. The microlaser is a composite cavity formed from a gain medium crystal and a nonlinear frequency doubling material which together have four spaced parallel dielectrically coated faces (14, 17, 18, 15) and which is positioned in close proximity to a diode laser pump source (13) for phase-matched harmonic generation of blue light along an axis of propagation which lies substantially perpendicular to the two faces of the composite cavity. By employing specific doping concentration-lengths products of lasant material and pumping the gain medium which has a specific crystalline orientation the desired efficient blue microlaser is achieved. Alternative embodiments combine the Nd:YVO.sub.4 and Nd:GdVO.sub.4 elements to enhance certain output characteristics of the laser.

8. 发明授权

US07646546B1 Anamorphic optical system providing a highly polarized laser output 有权
标题翻译：变形光学系统提供高度偏振的激光输出
公开(公告)号：US07646546B1
公开(公告)日：2010-01-12
申请号：US11451623
申请日：2006-06-12
申请人： John O'Shaughnessy , David E. Hargis , Eric B. Takeuchi , Marc L. Shaffer
发明人： John O'Shaughnessy , David E. Hargis , Eric B. Takeuchi , Marc L. Shaffer
IPC分类号： G02B13/10 , G02B13/08
CPC分类号： G02B27/0081 , G02B19/0014 , G02B19/0052 , G02B27/0972 , G02B27/283 , H01S5/005 , H01S5/0092 , H01S5/0683
摘要： Apparatus and methods are disclosed for transforming a laser beam to a polarized shaped beam in, for example, a frequency converted laser system. In one embodiment, an anamorphic optical system includes a first prism and a second prism that can be configured to form a Brewster telescope, the first prism and second prism each having an input surface and an exit surface, and wherein at least one surface of the input or exit surfaces are coated with a polarization selective coating. The optical system can include an adjustment system configured to change the position of one or both of the first prism and the second prism to adjust the transformation of the shape of the laser beam. In some embodiments of the optical system, a configuration of the first prism, the second prism, and the polarization selective coating produce a laser beam having a polarization ratio of about 100:1 or higher.
摘要翻译：公开了用于将激光束变换成例如变频激光系统中的偏振成形光束的装置和方法。在一个实施例中，变形光学系统包括第一棱镜和第二棱镜，其可以被配置成形成布鲁斯特望远镜，第一棱镜和第二棱镜各自具有输入表面和出射表面，并且其中至少一个表面输入或出射表面涂覆有偏振选择性涂层。光学系统可以包括被配置为改变第一棱镜和第二棱镜中的一个或两个的位置以调整激光束的形状的变换的调节系统。在光学系统的一些实施例中，第一棱镜，第二棱镜和偏振选择性涂层的配置产生具有约100:1或更高的偏振比的激光束。

9. 发明申请

US20090257054A1 COMPACT, THERMALLY STABLE FIBER-OPTIC ARRAY MOUNTABLE TO FLOW CELL 有权
标题翻译：紧凑，热稳定的光纤阵列可以安装在流动池中
公开(公告)号：US20090257054A1
公开(公告)日：2009-10-15
申请号：US12418494
申请日：2009-04-03
申请人： David E. Hargis
发明人： David E. Hargis
IPC分类号： G01N1/10 , G01J1/58
CPC分类号： G01J3/10 , G01J3/0286 , G01N21/05 , G01N21/31 , G01N21/6402 , G01N21/645 , G01N2021/0346 , G01N2021/6419
摘要： Various embodiments of an optical system for directing light for optical measurements such laser-induced fluorescence and spectroscopic analysis are disclosed. In some embodiments, the optical system includes a thermally conductive housing and a thermoelectric controller, a plurality of optical fibers, and one or more optical elements to direct light emitted by the optical fibers to illuminate a flow cell. The housing is configured to attach to a flow cell.
摘要翻译：公开了用于引导光用于诸如激光诱导荧光和光谱分析之类的光学测量的光学系统的各种实施例。在一些实施例中，光学系统包括导热壳体和热电控制器，多个光纤以及一个或多个光学元件，用于引导由光纤发射的光以照亮流动池。壳体被配置成附接到流动池。

10. 发明授权

US07197059B2 Short wavelength diode-pumped solid-state laser 有权
标题翻译：短波长二极管泵浦固态激光器
公开(公告)号：US07197059B2
公开(公告)日：2007-03-27
申请号：US11138606
申请日：2005-05-25
申请人： Eric B. Takeuchi , David E. Hargis
发明人： Eric B. Takeuchi , David E. Hargis
IPC分类号： H01S3/09
CPC分类号： H01S3/0941 , H01S3/0621 , H01S3/0627 , H01S3/1603 , H01S5/32341
摘要： A diode-pumped solid-state laser including a short wavelength (e.g., blue, violet, or UV) semiconductor laser that pumps an absorption transition in a rare-earth-doped material. Responsive to this pumping, the rare-earth active ion directly emits laser radiation. A number of different wavelength outputs, including short wavelengths, are achievable dependent upon the material and the pump wavelength. The gain medium may include an active ion selected from Er3+ Sm3+, Eu3+, Tb3+, Dy3+, Tm3+, Ho3+, and Pr3+. A laser diode pump source has a wavelength in the range of about 365 nm to 480 nm to excite a laser emission in the range of 370 to 800 nm. The laser diode pump source may comprise a GaN-based semiconductor. In some embodiments, the laser diode pump source supplies a pump beam in a range of 370–380 nm, 400–415 nm, 435–445 nm, or 468–478 nm.
摘要翻译：包括在稀土掺杂材料中泵浦吸收跃迁的短波长（例如，蓝色，紫色或UV）半导体激光器的二极管泵浦固态激光器。响应于这种泵送，稀土活性离子直接发射激光辐射。取决于材料和泵浦波长，可以实现许多不同的波长输出，包括短波长。增益介质可以包括选自Er 3+，Sm 3+，Eu 3+，Tb 3+的活性离子， SUP 3，Dy 3+，T 3+，Ho 3+，和3+ 3+。激光二极管泵浦源具有在约365nm至480nm范围内的波长，以激发在370至800nm范围内的激光发射。激光二极管泵浦源可以包括GaN基半导体。在一些实施例中，激光二极管泵浦源提供在370-380nm，400-415nm，435-445nm或468-478nm范围内的泵浦光束。

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